Fastening device



\ (No Model.)

M. 0. SOMBORN. FASTENING DEVICE Patented Aug. 27, 1889.

No.41Q038.

' IN VBNTOR BY ATTORNEY UNITED STATES T PATENT OFFICE.

MEYER O. SOMBORN, OF BROOKLYN, NEW YORK.

FASTENING DEVICE.

SPECIFICATION forming part of Letters Patent No. 410,038, dated August27, 1889.

Application filed January 31, 1887- Serial No. 226,013. (No model.)

To all whom it may concern:

Be it known that I, MEYER G. SOMBORN, a citizen of the United States,and a resident of Brooklyn,in the county of Kings and State of New York,have invented a new and useful Improvement in Fastening Devices, ofwhich the following is a specification.

The object of myinvention is to provide an improved device to take theplace of the ordinary nails or tacks for fastening the wooden or otherbacking of a picture to the pictureframe, or for securing the glass paneof awindow to the sash, or for other like purposes.

The invention will be hereinafter fully described, and specificallypointed out in the claims, reference being had to the accompanfi ingdrawings, in which- Figure 1 represents a rear view of a pictureframe,showing the backing secured thereto by means of fasteners constructedaccording to my present invention. Fig. 2 is a side View of one ofmyimproved fastening devices. Fig. 3 represents cross-sections of fourmodifications of the same, the section being taken on the line or: w ofFig. 2.

A is the frame, seen from the back.

B is the ordinary thin wooden board which serves as backing to the paperor picture and presses the same against the glass.

0 are my improved fastening devices for keeping the board so pressedagainst the back of the picture.

As is-well known, the ordinary thin wooden board B warps more or lessand bulges out at different places, not pressing the paper smoothly uponthe glass. To hold it-smooth by the ordinary tack is impracticable, asthey touch the board only in one single point of contact, and it istherefore often necessary to discard the board and insert a new one, orelse to nail strips of wood to the frame, so that the entire strip willpress upon the board. To overcome this difiiculty, my fastening device 0is made in the shape of a bar at, having a series of points 0 projectinglaterally from the same somewhat in the manner of teeth projectin g fromthe back of a comb.

In order to bear evenly upon the board B while the points 0 are insertedin the frame, as in Fig. 1, the said bar A is made much thicker than theinner ends of the points 0, so as to form a rib b lengthwise of the bar,which rib bears upon the wood when the nail is inserted in the frame.This rib can either be a continuous swell cast or forged in one piecewith the bar A, either on one or both sides thereof, as shown in thefirst and fourth modifications of Fig. 3. If on both sides, it obviatesthe necessity of observing which side of the bar is turned up or downwhen applying the fastener.

This nail may be stamped out of a metal plate and the rib b formed inthe same operation by bending up the edge at an angle, as shown in thesecond modification of Fig. 3; or a bead might be struck up in the samemanner at a little distance from the edge of the bar,

'as in the third modification in the said figure.

For frames of ordinary sizes four of these fasteners c are generallysufficient applied at the corners, as shown at the upper left corner ofFig. 1, although they may be applied at any other place, according asoccasion requires, as also shown in Fig. 1. For frames of larger sizes alarger number of them is of course used.

' These fastening devices 0, I make larger or smaller, with longer orshorter points, according to the uses for which they are intended.

To facilitate the removal of my improved fastening device frompicture-frames in cases where the nail has been driven in the frameclose up to the head, I provide in the bar a one or more indentations dor holes d, as shown in Fig. 2, in which a point or nail can be insertedto pull my fastening device out without marl-ing the edge of the frame.

I am aware that tack-strips have been made in which a number of tacksproject side by side from a head-strip inthe close proximity to eachother which results from a similar series of tacks of another stripbeing punched from between the first-mentioned series, the same being soclose that such a device could not be driven into the wood, becausethere is not space enough between the tacks for allowing the necessarydisplacement of the wood by the tacks.

My improved fastening device is distinguished from such tack-strips inthe location of the tack-points so far apart as to allow of suchdisplacement, the said distance necessa-.

rily being more than double the distance of the width of thetack-points.

Having thus described my invention, what I claim as neW, and desire tosecure by Letters Patent, is-

1. The improved fastening device consisting of a bar a, having a seriesof three or more 5 points integral therewith and projecting from oneside or edge, and being located on said strip more than double the Widthof a point apart, substantially as described.

2. A fastening device consisting of a bar a, I0 provided With a seriesof three or more points projecting from the edge thereof and integraltherewith, and being also provided with indentations or holes d 61,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as 15 my invention I have signedmy name, in the presence of two Witnesses, this 24th day of January,1887.

MEYER O. SOMBORN. lVitnesses:

A. W. ALMQVIST, T. M. CRossMAN.

